Need help : implement Gigabit Ethernet

thanks for advice Daixi,

i build the project without trouble but when i tried to run as "nios II hw", i didn't see some errors but that :

"

Using cable "USB-Blaster [USB-0]", device 1, instance 0x00

Processor is already paused

Reading System ID at address 0x10022C90: verified

Initializing CPU cache (if present)

OK

Downloading 0C000000 ( 0%)

Downloading 0C010000 (20%)

Downloading 0C020000 (40%)

Downloading 0C030000 (61%)

Downloading 0C040000 (81%)

Downloaded 314KB in 5.4s (58.1KB/s)

Verifying 0C000000 ( 0%)

Verify failed between address 0xC000000 and 0xC00FFFF

Leaving target processor paused

"

and nothing else happened on my board or on the console

i have exactly the same with an "hello_world" project, maybe do you know what mistake i have done

thanks in advance